Following the search, all identified citations were uploaded into Covidence systematic review software (40) and duplicates removed. Titles and abstracts were screened for assessment against review inclusion and exclusion criteria. Full text of selected citations was assessed in detail against the inclusion and exclusion criteria. The entire screening process was undertaken by two investigators (FS, CF) at each stage of the study selection process and disagreements were resolved through consensus discussion with a third arbitrary investigator (RW). The results of the search are reported in full and presented in a Preferred Reporting Items for Systematic Reviews and Meta-analyses (PRISMA) flow diagram (41) as shown in Figure 1.
PRISMA flowchart.
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